70734-74-6

Basic information

• Product Name: Ethanedione, phenyl[4-(phenylethynyl)phenyl]-
• CAS NO: 70734-74-6
• Molecular Formula: C22H14O2
• Molecular Weight: 310.352
• Mol File: 70734-74-6.mol
• Article Data: 4

Chemical Properties

• CAS DataBase Reference: Ethanedione, phenyl[4-(phenylethynyl)phenyl]-(CAS DataBase Reference)
• NIST Chemistry Reference: Ethanedione, phenyl[4-(phenylethynyl)phenyl]-(70734-74-6)
• EPA Substance Registry System: Ethanedione, phenyl[4-(phenylethynyl)phenyl]-(70734-74-6)

Safety Data

• Hazardous Substances Data: 70734-74-6(Hazardous Substances Data)

Upstream product

• 39229-12-4 4-bromobenzil 
• 536-74-3 phenylacetylene 
• 1849-27-0 1,4-bis(2-phenylethynyl)benzene 
• 21850-30-6 (E)-1-(2-phenylethenyl)-4-(phenylethynyl)benzene 

Relevant articles and documents

Polyphenylene oligomers and polymers

The present invention refers to aromatic monomers containing at least one cyclopentadienone moiety and at least one acetylene moiety and oligomers, uncured polymers and cured polymers comprising the reaction product thereof.

Chemoselective oxidation of carbon-carbon double or triple bonds to 1,2-diketones with DMSO-based reagents

HBr/DMSO selectively oxidizes the double bond in (E)-1-(2-phenylethenyl)-4-(phenylethynyl)benzene (1) to 1,2-diketone 2. However, 12/DMSO and PdCl2/DMSO oxidize only the triple bond in 1 to 1,2-diketone 3. A similar trend of chemoselectivity is shown for the oxidation of (E)-1,4-diphenyl-1-buten-3-yne (6) with the DMSO-based reagents.